https://postscale.io/blog Developer-focused posts on transactional email, inbound webhooks, DMARC, e-invoicing, and EU-hosted infrastructure. en-US Thu, 16 Apr 2026 17:26:50 GMT https://postscale.io/blog/migrating-from-mailgun-to-eu https://postscale.io/blog/migrating-from-mailgun-to-eu Tue, 19 May 2026 00:00:00 GMT What actually changes when you move transactional sending from Mailgun to an EU-hosted provider — DNS, SDK, events, inbound, and the migration-week checklist. Guides https://postscale.io/blog/dmarc-xml-parser-tutorial https://postscale.io/blog/dmarc-xml-parser-tutorial Tue, 05 May 2026 00:00:00 GMT Walk through parsing DMARC aggregate (RUA) XML reports in three languages. Schema handling, gzip/zip unpacking, and aggregating records across multiple reports. Tutorials https://postscale.io/blog/resend-postmark-mailgun-postscale-comparison https://postscale.io/blog/resend-postmark-mailgun-postscale-comparison Sat, 02 May 2026 00:00:00 GMT Side-by-side look at four transactional email APIs — pricing, features, EU-compliance posture, and when to pick each. Comparisons https://postscale.io/blog/email-warming-ip-vs-domain https://postscale.io/blog/email-warming-ip-vs-domain Tue, 28 Apr 2026 00:00:00 GMT Warming an IP versus warming a domain are different problems with different timelines. Here's what each is, when you need it, and how to do it without burning your sender reputation. Guides https://postscale.io/blog/eu-email-api-gdpr-comparison https://postscale.io/blog/eu-email-api-gdpr-comparison Thu, 09 Apr 2026 00:00:00 GMT A practical breakdown of EU data residency, GDPR processor requirements, and how the major transactional email APIs stack up against them. Comparisons https://postscale.io/blog/inbound-email-api-tutorial https://postscale.io/blog/inbound-email-api-tutorial Sat, 21 Mar 2026 00:00:00 GMT Step-by-step guide to turning a customer-facing inbox into structured webhooks. Parse MIME, handle attachments, detect replies, and route by subject pattern. Tutorials https://postscale.io/blog/srs-email-forwarding-explained https://postscale.io/blog/srs-email-forwarding-explained Sat, 14 Mar 2026 00:00:00 GMT Why forwarded email breaks SPF, what SRS (Sender Rewriting Scheme) does about it, and when you absolutely need to implement it. Guides https://postscale.io/blog/parse-dmarc-reports-api https://postscale.io/blog/parse-dmarc-reports-api Tue, 03 Mar 2026 00:00:00 GMT DMARC aggregate reports arrive as compressed XML from dozens of receivers. Here's how to parse, aggregate, and act on them without opening a single ZIP by hand. Tutorials https://postscale.io/blog/spf-dkim-dmarc-setup-2026 https://postscale.io/blog/spf-dkim-dmarc-setup-2026 Wed, 18 Feb 2026 00:00:00 GMT A concrete 2026 setup for email authentication — what Gmail and Yahoo now require, what's changed from 2024, and the DNS records you actually need. Guides https://postscale.io/blog/xrechnung-api-developer-guide https://postscale.io/blog/xrechnung-api-developer-guide Wed, 04 Feb 2026 00:00:00 GMT What XRechnung is, what the German B2B e-invoicing mandate requires, and how to send and receive EN 16931-compliant invoices through a REST API. Guides https://postscale.io/blog/introducing-postscale https://postscale.io/blog/introducing-postscale Thu, 15 Jan 2026 00:00:00 GMT Today we're launching Postscale - complete email infrastructure for developers. Send, receive, and protect. Announcements https://postscale.io/blog/email-deliverability-guide https://postscale.io/blog/email-deliverability-guide Sat, 10 Jan 2026 00:00:00 GMT Everything you need to know about getting your emails into the inbox, not the spam folder. Guides https://postscale.io/blog/masked-emails-privacy https://postscale.io/blog/masked-emails-privacy Mon, 05 Jan 2026 00:00:00 GMT How masked email addresses protect user privacy and why every platform should offer them. Privacy